I have nothing against Wallace. He has been a great servant to the club over the years. But to suggest we need to keep him is ridiculous. He's started 3 Premiership games this season (GW1, GW3 and GW4). The only other games he has started in all season are a Premiership Cup game (v Exeter) and a European game (last week).
Since his last start in GW4 - he hasnt even been in the match day 23.
He barely played at all last season due to injury. And he is way behind Robshaw, Dombrandt, Chisholm, Clifford and Kunatani.
He is a squad player at best - not someone we cannot afford to lose. I do not have stats but he has barely made any turnovers in the games he has played over the last 2 seasons (which used to be his best asset).
Clifford would be a far bigger loss.
For me - if Wallace leaves - he will be a bench player. He is not good enough for any PL first 15.
So - yes we should thank him for his valuable contribution over many years. But he is definitely not someone we cannot afford to lose. Or indeed that we would struggle to replace - since he has barely featured at all!
Come the Bristol and Worcester key PL games - he will not start. I doubt he will even make the bench.